Java tutorial
/* * Copyright (C) 2009 Camptocamp * * This file is part of MapFish Server * * MapFish Server is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * MapFish Server is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with MapFish Server. If not, see <http://www.gnu.org/licenses/>. */ package org.mapfish.print.map.renderers; import com.lowagie.text.DocumentException; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfGState; import com.lowagie.text.pdf.PdfImportedPage; import com.lowagie.text.pdf.PdfReader; import org.apache.log4j.Logger; import org.mapfish.print.InvalidValueException; import org.mapfish.print.RenderingContext; import org.mapfish.print.Transformer; import org.mapfish.print.map.MapTileTask; import org.mapfish.print.map.ParallelMapTileLoader; import java.io.IOException; import java.net.URI; import java.util.List; public class PDFTileRenderer extends TileRenderer { public static final Logger LOGGER = Logger.getLogger(PDFTileRenderer.class); public void render(final Transformer transformer, List<URI> uris, ParallelMapTileLoader parallelMapTileLoader, final RenderingContext context, final float opacity, int nbTilesHorizontal, float offsetX, float offsetY, long bitmapTileW, long bitmapTileH) throws IOException { if (uris.size() != 1) { //tiling not supported in PDF throw new InvalidValueException("format", "application/x-pdf"); } final URI uri = uris.get(0); parallelMapTileLoader.addTileToLoad(new MapTileTask() { public PdfImportedPage pdfMap; protected void readTile() throws IOException, DocumentException { LOGGER.debug(uri); PdfReader reader = new PdfReader(uri.toURL()); synchronized (context.getPdfLock()) { pdfMap = context.getWriter().getImportedPage(reader, 1); if (opacity < 1.0) { PdfGState gs = new PdfGState(); gs.setFillOpacity(opacity); gs.setStrokeOpacity(opacity); //gs.setBlendMode(PdfGState.BM_SOFTLIGHT); pdfMap.setGState(gs); } } } protected void renderOnPdf(PdfContentByte dc) throws DocumentException { dc.transform(transformer.getPdfTransform()); dc.addTemplate(pdfMap, 0, 0); } }); } }